"We've designed aliases to make it easy to have multiple email addresses (for receiving and sending) connected to a single Microsoft account," said Microsoft's group program manager Eric Doerr.

"That means that you want to have one Microsoft account that lets you light up your Microsoft devices and services with your stuff: your gamer score, your email inboxes, your calendars, your people, and your files, as well as to connect to all the networks you care about."